I don't know if any of you follow game sales or not... but I like to follow some of this sort of thing. Similar to box office results on your favorite movies, the sales numbers help determine whether or not we get sequels to our favorite games!!
It's my understanding that there are other sites out there for this sort of thing, but this is the one that I use.
vgchartz.com
It's also kind of fun to be able to look up some older games and see the sales numbers... or see charts about which systems sold more etc.
Enjoy!
PF